<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        html{
            margin: 0px;
            padding: 0px;
            height: 100%;
            width: 100%;
        }
        body{
            margin: 0px;
            padding: 0px;
            height: 100%;
            width: 100%;
             background-image: url("/images/500.jpg");
            background-repeat:no-repeat;
            background-size:100% 100%;
            -moz-background-size:100% 100%;
         }
    </style>
</head>
<body>

</body>
</html>